Water cooler



FIG. 1 is a top right front perspective view of a water cooler showingmy new design;

FIG. 2 is a left side elevational view thereof; the right sideelevational view being a mirror image;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a top plan view thereof; and,

FIG. 5 is a rear elevational view thereof.

The ornamental design for a water cooler, as shown and described.